[blitz] - palette handling - need some help

[peceha]

Hi,
there is a short recording below but first read my explanation in order to understand the video.

The display is dualfield (AGA) so 2x16 colors

The palette object is 32 colors:

InitPalette 0,32

First 16 colors are for foreground bitmap - entities + boxes
Last 16 colors are for background bitmap - walls,floors and animated "windmill" stuff.

Each bitmap that I use has 4 bitplans

To load the tileset I do as follows:

LoadBitmap 3,"tiles.iff"

LoadPalette 0,"entities.iff",0   ;to set fore colors of my palette
LoadPalette 0,"tiles.iff",16      ;to set back colors of my palette

DisplayPalette 0,0
...

the above procedure is used everytime I load a new set of tiles.

To make sure that colors 0-15 are not changed by "LoadBitmap" I use "LoadPalette 0, "entities.iff,0" and just after this I assign colors from new tiles to second part of my palette object (offset 16 at the end of LoadPalette command) and then comes "DisplayPalette"

Now the movie:
1.the program starts with background tiles set to blue colors and foreground with normal colors
2. I load tiles no.7 (background) with correct colors -> walls, floors and animated objects changed the colors as expected - all fine at this point
3. I load back tiles no.2 (blue) ... and what I get??? -> only the "windmill" object changed the color but all the background should become blue....

WHAT AM I DOING WRONG???

At the very end I show used bitmaps in dPaint to make sure there is nothing wrong with them.

ps. video is rotaded 90 deg. but still you can see the problem with palette
[ Show youtube player ]

[Nightshft]

IIRC AGA Dualplayfield uses
pen 0 for background
pens 1..7 for playfield 1, normally foreground
pens 9..15 for playfield 2, normally background
to keep ocs compatibility.

However, looks like "displaycontrols" can be used to change the assignment.

see here
http://eab.abime.net/showpost.php?p=...&postcount=129

A while ago I tried it with AGA and 3+3 bitplanes and it went like this. Didn't try 4+4 bitplanes for now.

Let me know if it works out...

[peceha]

Hi,
actually I've been using DisplayControls since longtime and the arguments are exactly the same like the ones you pointed to.




I belive the problem is somewhere else - funny thing is sometimes all is workin fine and sometimes not.

Anyway I gave up on that issue for a while and will come back to this later on.

I just noticed missing video from my first post so here it goes again:
[ Show youtube player ]

ps. video is rotated.. again